JPH0994662A - Welding machine inspecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding machine inspecting device capable of easily inspecting and adjusting a welding machine. SOLUTION: A data input and output circuit 11 which outputs a signal transferred between a welding control part 43 and a head part 42 as the composition part of a welding machine to a computer 12 side is installed, and a CPU 21 supplies a prescribed signal against the welding controlling part 43 through the data input and output circuit 43 in place of a remote control part 41. On the result of that supplying, the level of the signal outputted from the welding control part 43 or the head part 42 is measured, and the welding machine inspecting device is composed so that the measured level is displayed on a displaying device 25 together with the level of signal to be obtained essentially for the prescribed signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding machine inspection apparatus used for inspecting a welding machine, and more particularly to a welding machine inspection apparatus used for inspecting or adjusting a welding machine for weaving a steel pipe.

[0002]

2. Description of the Related Art With the recent progress in semiconductor technology, the functionality of welding machines has been improved, and a welding machine has been developed in which welding can be performed in accordance with the welding conditions by simply defining the welding conditions. ing. For example, the following are known as welding machines capable of weaving welding.

An outline of a welding machine capable of weaving welding will be described with reference to FIG. As illustrated, the welding machine includes a remote control unit 41 for operating the welding machine, a head unit 42 that actually performs welding, and a welding control unit 43 that controls the head unit 42 according to a signal from the remote control unit 41. And
It is configured by electrically connecting with a cable.

The control unit 41 is provided with various switches and volume for instructing the operation contents of the head unit 42, and the control unit 41 outputs an instruction signal according to the operation contents.

In the head portion 42, a pistol-shaped torch for supplying the shielding gas and the wire to the welding portion,
A torch is provided with a traveling motor for traveling around a steel pipe that is an object to be welded, a weaving motor for swinging a welding point, and a wire feeding motor for feeding a wire. ing. Each of these three types of motors is equipped with a tacho generator (TG) for detecting the number of rotations thereof. The head unit 42 is also provided with a sensor for detecting the state of the head unit 42, such as a rotary encoder that detects the absolute position of the torch.

The welding control section 43 comprises a control signal generation section 51 and a welding power source 52, and the control signal generation section 5
1 generates a control signal according to the type and level of the instruction signal from the remote controller 41. Then, by directly supplying the generated control signal to the head unit 42, the head unit 4
The welding voltage is supplied to the welding head portion 42 by driving the welding power source 2 and controlling the welding power source 52 according to the content of the instruction signal.

The control signal generator 51 is provided with an IC card reader (not shown). This welding machine operates the remote controller 41 to set the IC set in the IC card reader. Weaving welding can also be performed according to the contents of the card.

[0008]

When the welding machine as described above is manufactured, it is necessary to inspect whether or not the welding machine functions properly, and the characteristics of the elements used in the welding machine vary. When a volume for compensating for the above is provided, it is necessary to adjust each volume to an optimum state.

Conventionally, such inspection / adjustment work has been carried out by connecting each part with a cable and actually operating (welding) the welding machine. For this reason, if the welding machine is not functioning normally, much time is required to identify which part is abnormal.
Further, since the adjustment was carried out by observing the movement of the welding machine and adjusting various volumes, even a skilled worker needed a lot of time for the adjustment. In particular, with a welding machine that performs weaving welding as described above, there are many items that must be adjusted or inspected, so in addition to the problem that adjustment and inspection take a lot of time, adjustment and inspection errors occur. There was also the problem of being lost.

Therefore, an object of the present invention is to inspect and weld a welding machine.
It is to provide a welding machine inspection device that can be adjusted extremely easily.

[0011]

A welding machine inspection apparatus according to the present invention responds to an instruction signal from a first operation section that outputs an instruction signal of a type according to an operation content of an operator. A welding control unit that generates a control signal and a head unit that executes a welding operation according to the control signal generated by this welding control unit and outputs a status signal according to the operating state to the welding control unit. A welding machine inspection device for inspecting the welders that are configured, and (a) a display section for displaying the inspection result of the welding machine and (b) a predetermined instruction signal for operating the welding control section. And a control signal or status signal transmitted / received between the welding control unit and the head unit while inputting a predetermined instruction signal output by the second operation unit to the welding control unit. And an input / output unit that outputs (D) The level of the control signal from the welding control section or the status signal from the head section output by the input / output section is measured by the output of the predetermined instruction signal from the second operating section, and the level of the measured signal is set to the predetermined level. And a display control unit for displaying on the display unit together with a specified level that is specified in advance as the level of the signal to be obtained with respect to the instruction signal.

That is, the welding machine inspection apparatus according to the present invention electrically connects the welding control section and the head section, which constitute the welding machine, and controls or sends / receives a control signal or a status signal between the welding control section and the head. An input / output unit for outputting is provided. The second operation section outputs a predetermined instruction signal to the welding control section instead of the first operation section (remote control section), and the display control section outputs the predetermined instruction signal as a result of the supply of the predetermined instruction signal. The level of the control signal from the welding control unit or the state signal from the head unit is measured, and the measured signal level is originally specified as the level of the signal that should be obtained with respect to the predetermined instruction signal. Display with the specified level.

According to the present invention, since the signal level to be output when each part is functioning normally is displayed together with the measured value, the welding machine can be easily inspected and adjusted. Become. Also, the remote control unit (first operation unit)
Since it is possible to inspect the welding control unit and the head unit separately from the inspection of No. 1, it is easy to identify the faulty portion.

Further, as the display control unit, one that displays a message indicating that the welding control unit or the head unit is functioning normally when the measured signal level matches the specified level is used. May be. When the display control unit that operates in this manner is used, the inspection result can be grasped without performing the comparison work of the numerical information.

As the second operation unit, a unit that determines the type of a predetermined instruction signal to be output based on welding information that holds the welding operation contents held by the welding control unit may be used. For example, when a welding machine that can store welding information that defines the optimum welding current, welding voltage, welding speed, weaving width, weaving speed, etc. in an IC card is to be inspected, it is necessary from the IC card. The second operation unit is configured to read out the appropriate information and determine the type of the instruction signal to be output to the welding controller. When this configuration is adopted, the welding machine can be inspected and adjusted under the most frequently used conditions.

Further, an instruction section for instructing the operator of the operation content to be performed on the first operation section (remote control section) is added, and an operation according to the operation content instructed by the instruction section is provided as a display control section. Is used to measure the level of the instruction signal output by the first operation unit, and the measured signal level is specified in advance as the level of the instruction signal to be output by the first operation unit for the operation content. In comparison with the above, the display unit may display a message indicating that the first operation unit is functioning normally when both levels match.

When the above-described configuration is added to the welding machine inspection apparatus according to the present invention, the remote controller can be inspected by only operating the remote controller (first operation unit) according to the operation contents displayed on the display unit. It will be.

[0018]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the drawings. FIG. 1 shows a configuration of a welding machine inspection apparatus according to the present invention and a connection form with a welding machine. As shown in the figure, the welding machine inspection apparatus according to the present invention has a data input / output circuit 1
1, CPU (Central Processing Unit) 21 and ROM
(Read Only Memoly) 22 and RAM (Random access Memol)
y), the storage device 24, the display device 25, the keyboard 26, the computer 12 including the interfaces 27 and 28, and the bus 29, and the printer 13. The remote control unit 41, the head unit 42, and the welding control unit 43 of the welder to be inspected are connected to the data input / output circuit 11, respectively, and the data input / output circuit 11 and the printer 13 are
Interfaces 27 and 28 are connected to the computer 12, respectively.

The remote control unit 41, the head unit 42, and the welding control unit 43, which are the objects to be inspected by the present apparatus, have been outlined above with reference to FIG. The welding controller 43 is connected to the data input / output circuit 11.

The data input / output circuit 11 is a circuit provided to allow data (signals) to be exchanged between various parts of the welding machine and the computer 12, and includes an A / D (analog / digital) converter and a data converter. It is composed of a memory, an interface circuit, and the like for buffering.

In the data input / output circuit 11, the head unit 4
2 and the welding control unit 43 are electrically connected to each other, and the data input / output circuit 11 transmits signals transmitted and received between them.
Output to the computer 12. Further, the remote controller 41 can be electrically connected to or disconnected from the welding controller 43 and the head 42, and connection / disconnection is switched according to an instruction from the CPU 21.

The CPU 21 is a control circuit for controlling this apparatus in an integrated manner. For example, the CPU 21 outputs an instruction signal to the welding control section 43 via the data input / output circuit 11, and the welding control section 43 and the head section 42. To perform a specific welding operation. Then, the level of the state signal output by the head unit 42 and the level of the control signal output by the welding control unit 43 are measured, and the measured signal level is set together with the prescribed level that should be obtained when each unit is functioning normally. , On the screen of the display device 25.

Further, the CPU 21 displays on the screen of the display device 25 the operation contents to be performed by the operator on the remote control unit, and as a result of the operation according to the operation contents, the remote control unit 4
The level of the instruction signal output by 1 is originally the remote control unit 4
1 is compared with a predetermined instruction signal level as an instruction signal level to be output, and when both levels match, a message indicating that the remote controller is functioning normally is displayed.

A program defining the operation procedure of the CPU 21 as described above is stored in the storage device 24,
When the power is turned on, the CPU 21 causes the operating system stored in the storage device 24 to be stored in the RAM 23 according to the initial program loader stored in the ROM 22.
Read out to a predetermined storage area. Next, the CPU 21
Welder inspection device program is read out on RAM23,
The operation is performed according to the read welding machine inspection device program.

In this welding machine inspection device, the storage device 2
As 5, a hard disk device and a floppy disk device are used, and the operation system and the welding machine control program are stored in the hard disk device.

The operation of this welding machine inspection apparatus will be described in detail below. FIG. 2 shows a welding machine inspection device (CPU2 of the present invention.
The overall flow of operation 1) is shown. As shown in the figure, when the apparatus is started up, the CPU 21 first displays the display device 2
5 is controlled to display the main menu on the screen (step S101).

FIG. 3 shows an outline of the main menu displayed in this step. As shown in the figure, the main menu displays six processes that can be executed by this device, and the user of this device selects the process to be executed by pressing the numerical keys from "1" to "6". To do.

After displaying the main menu, the CPU 21
When it is detected that the numerical keys from "1" to "5" have been pressed (step S103;
For "1" to "5"), the process corresponding to the pressed key is executed (step S104), and the process returns to step S101. Further, when it is detected that the numerical key of "6" is pressed (step S103; N), the operation is ended.

The details of the processing executed in step S104 will be described below. As is apparent from the main menu shown in FIG. 3, this apparatus can select five types of processing such as “shipment test”, “maintenance monitor”, “adjustment”, “waveform display”, and “floppy disk initialization”. Is configured. Of these, the “floppy disk initialization” that is executed when “5” is pressed is a so-called format process, so here, the user selects “1”.
Only the four kinds of processing executed when the numerical keys "4" to "4" are pressed will be explained.

FIG. 4 shows the CPU 21 at the time of executing the "shipment test".
The flow of the operation of is shown. As shown in the figure, when the “shipment test” is selected, the CPU 21 first controls the display device 25 to display a message prompting the user to enter the product number on the screen (step S201). Then, the information from the keyboard 26 is acquired as the product number (step S202).

Next, the CPU 21 controls the display device 25 to display a test item selection menu on the screen for allowing the user to select either "remote control unit test" or "head / body test". It is displayed (step S203).
In this device, this selection is made by inputting "1" or "2", and the CPU 21
When "1" is input (step S204; "1")
"Remote unit test" (step S20
5) and when "2" is input (step S204;
For "2"), "head / body test" is executed (step S205).

Details of the "remote control unit test" and the "head / body test" will be described below. First, the "remote control unit test" will be described. In Figure 5, "Remote control unit test"
The flow of operations of the CPU 21 during execution is shown. When execution of the “remote control unit test” is instructed, the CPU 21 controls the data input / output circuit 11 to disconnect the electrical connection between the remote control unit 41 and the welding control unit 43 (that is, the remote control unit 41 is operated. However, the welding control unit 43 and the head unit 42
The parameters i are initialized and the parameter i is initialized to "1" (step S301). Next, the display device 25 is controlled to display the remote control unit test menu on the screen (step S302).

FIG. 6 shows an outline of the remote control unit test menu. In this way, in the remote control unit test menu,
The product number (“1234” in the figure) acquired in step S202 of FIG. 4 and a plurality of test items to be performed on the remote control unit 41 are displayed.

After displaying this menu, the CPU 21
As the operation procedure for the second test item, previously stored information is displayed on the screen (FIG. 5: step S303)
I do. For example, when the CPU 21 executes this step for the first time, “1. Confirm the ON / OFF of the gas check key is executed on the screen. After turning on the gas check key, press the CR key.” Is displayed.

Thereafter, the CPU 21 monitors the key input (data input from the keyboard 26), and when it detects that the CR key (carriage return key) is pressed (step S304; Y), the data input / output circuit. 11 controls the level of the instruction signal output from the remote controller 41, and the level detected and the level of the instruction signal that should be originally output when the remote controller 41 is functioning normally are given in advance. It is determined whether or not the remote controller 41 is normally functioning with respect to the test item of interest at present by comparing it with the specified level of the instruction signal (step S305).

The instruction signal whose level is detected in step S305 is related to the key or volume whose operation is instructed in step S303, and the CPU 21 determines the input / output circuit 1 according to the value of the variable i.
By controlling 1, the level of the target instruction signal is detected (obtained).

After that, the CPU 21 executes step S305.
"Inspection OK" or "Inspection NG" based on the judgment result of
Such information is displayed (step S306), and the variable i is incremented by 1 (step S307). Then, based on the value of the variable i, it is determined whether or not the processing regarding all the test items is completed, and when the processing regarding all the test items is not completed (step S308; N), step S3.
Return to step 03 to display the operation procedure for the next test item.

When the processing for all the test items is completed (step S308; Y), a message for selecting whether or not to print is displayed, key input contents are monitored, and printing is performed. When execution is instructed (step S309; Y), the printer 13 is controlled to print the determination results for all items (step S31).
0), the "remote control unit test" ends (returns to step S101 in FIG. 2).

That is, an operator who conducts a "remote control unit test" using this apparatus operates the remote control unit 41 according to the operation procedure displayed on the screen, operates the key or volume, and then presses the CR key. To do. Then, the operation state of the remote controller 41 is checked by confirming the determination result displayed on the screen.

Although not shown in the flow chart of FIG. 5,
With this device, the previous test item can be tested again when the "\" key is pressed (subtraction of the variable i is performed).
If you make a mistake in the operation, you can use this key to redo the test. When the "ESC" key is pressed, the above process is interrupted / finished, and step S101 in FIG.
Is also configured to run.

Next, the operation of the CPU 21 when executing the "head / body test" will be described with reference to FIG. The “remote control unit test” is a process for testing the remote control unit 41, whereas the “head / body test” is the head unit 42.
And processing for testing the welding control unit 43.

When instructed to execute this process, the CPU
21 first controls the data input / output circuit 11 to electrically disconnect the remote controller 41 and the welding controller 43 (step S401). Then, the operation procedure to be performed by the operator for this test is displayed on the screen (step S402). In this case, the processing procedure shown on the screen is such as "Turn on the remote control power supply, insert the IC card, and then press the welding start switch."

After displaying this operation procedure, when the CPU 21 shifts to a state of detecting an instruction signal from the remote control unit 41 via the data input / output circuit 11, and detects that the "welding start switch" is pressed. (Step S403; Y)
The data input / output circuit 1 stores various information in the IC card.
The data table shown in FIG. 8 is displayed on the screen using the acquired information (step S404). In this data table, "Z.ZZ", "ZZ.Z"
Numerical information such as is information stored in the IC card or information calculated from the information.

Then, a welding start instruction is issued to the welding control section 43 (step S405). In addition, in this inspection apparatus, the head portion 41 is configured to travel from the 345 degree point to 16 degrees to perform the inspection, and in this step S405, the traveling range is also designated.

As already described, the head portion 42 and the welding control portion 43 are electrically connected in the data input / output circuit 11 so as to function as a welding machine. The portion 43 includes the head portion 42 and 345.
After moving to the degree position, the head unit 42 is driven according to the welding information stored in the IC card. Then, each sensor provided for detecting the operating state, such as the tacho-generator provided in the head portion 42, starts signal output.

The CPU 21 measures the signal output levels and displays the measurement result on the screen of the display device 25 (step S406). As a result, in the data table, the measured value “x.xx” is displayed in the measurement result display field that has been “0.00” until then, as schematically shown in FIG. 9. This measurement and display is performed by the head unit 42.
Is not completed within a predetermined range (step S40
7; N) Repeated.

Then, when the traveling in the predetermined range is completed (step S407; Y), the CPU 21 compares each measured value with the specified value so that the head portion 42 and the welding control portion 43 function normally. It is determined whether or not it is present, and the determination result is displayed on the screen (in the data table) (step S408).

Next, the CPU 21 creates a file name based on the product number, creates a file having the created file name, in which the judgment result is stored, on the disk set in the floppy disk device, and issues a print instruction. If it is done, the printer 13 is controlled to print the measurement result (step S409), and the “head / body inspection” is ended (return to step S101 in FIG. 2 to display the main menu).

Next, the operation of the CPU 21 when executing the "maintenance monitor" will be described. The “maintenance monitor” is a process provided to monitor the states of the remote control unit 41, the head unit 42, and the control unit 43. When this process is selected, the CPU 21 controls the data input / output circuit 11. Then, after the remote control unit 41 and the welding control unit 43 are electrically connected to each other, the level of the signal from each unit is measured and each measured value is displayed in the form as shown in FIG. During execution of this "maintenance monitor", the CPU 21 is adapted to repeat the level detection / display of each signal, and the user of this device can see what the respective parts are by seeing the monitor result (Fig. 10). It is possible to easily recognize whether or not it is in the state, and it is possible to easily perform, for example, an operation of moving the head portion 42 to a target position.

Next, the operation of the CPU 21 when executing the "adjustment" will be described with reference to FIG. As shown,
When "adjustment" is selected, the CPU 21 displays a message prompting the user to input the product number (step S501),
After the information input from the keyboard 26 is acquired as the product number (step S502), an adjustment item selection menu for selecting the adjustment process to be executed is displayed (step S503).

In this apparatus, two adjustment processes named "welding voltage / current command voltage adjustment" and "TG voltage adjustment" can be selected. In this step S503, "welding voltage / current adjustment" is performed. An adjustment item selection menu for instructing to input “1” when performing “command voltage adjustment” and “2” when performing “TG voltage adjustment” is displayed.

After displaying the menu, the CPU 21 monitors the input from the keyboard 26, and when detecting that "1" is input (step S504; "1"),
Execute "Welding voltage / current command voltage adjustment" (step S5
Then, when it is detected that "2" is input (step S504; "2"), "TG voltage adjustment" is executed (step S506).

The details of the "welding voltage / current command voltage adjustment" will be described below. As described above, in the welding machine to be inspected by the present apparatus, the control signal generation unit 51 in the welding control unit 43 generates the control signal in response to the instruction signal from the remote control unit 41, and the control signal is transmitted. The welding power source 52 thus received supplies electric power corresponding to the level of the control signal to the head portion 42 to perform welding.

"Welding voltage / current command voltage adjustment" is a process for adjusting the control circuit related to the welding power source 52. In step S505, the CPU 21 controls the data input / output circuit 11 to control the remote controller. The part 41 is separated from the welding control part 43, and a predetermined instruction is given to the welding control part 43 so that the welding voltage / current of a predetermined level is supplied to the head part 42. Then, the control signal generator 51
The welding voltage command voltage and welding current command voltage output from the welding power source 52 to the welding power source 52 and the welding voltage and welding current from the welding power source 52 to the head portion 42 are measured at any time, and the measured value is originally obtained as a detection result. It is displayed on the screen in the form as shown in FIG. 12 together with the specified value which is the power level.

A person who adjusts the welding machine using this apparatus is
While observing the display as shown in FIG. 12, the volume provided in the welding control unit 43 is adjusted so that the measured value matches the specified value. At the time of "welding voltage / current command voltage adjustment", the CPU 21 also monitors the ESC key (escape key) input, and when the ESC key is pressed, "welding voltage / current command voltage adjustment" is performed. finish.

Next, the details of "TG voltage adjustment" will be described. The operation procedure of the CPU 21 at the time of “TG voltage adjustment” is as follows.
It is almost the same as the operation procedure at the "head / body test",
Only the information displayed on the screen is different.

13 shows the contents displayed on the screen at the time of "TG voltage adjustment". As shown in the figure, during the "TG voltage adjustment", only a part of the contents (see Figs. 8 and 9) displayed during the "head / body test" are displayed, and this device is used to adjust the welding machine. The person who performs the process adjusts the volume provided in the welding control unit 43 so that the measured value matches the specified value while looking at the display as shown in FIG.

Finally, the details of "waveform display" will be described.
“Waveform display” is a process for displaying data that can be measured by the CPU 21, such as weaving amplitude, with the horizontal axis as the time axis, and the process performed on the welding machine is almost the same as the “maintenance monitor”. Has become.

That is, when execution of "waveform display" is instructed, the CPU 21 controls the data input / output unit 11 to electrically connect the remote control unit 41, the head unit 42, and the welding control unit 43. In this way, each signal level is measured from each unit and the time change is displayed.

In this "waveform display", for example, when the weaving amplitude is selected, the waveform as shown in FIG. 14 is displayed. In this device,
The function keys are used to select the signals to be displayed, change the sampling cycle, and select the sampling mode. For example, when the function keys numbered “1” to “4”, which are schematically shown in the lower part of FIG. 13, are pressed, the CPU 21 sets the sampling cycle of the signal in accordance with the pressed function key. change. When the function key of "5" or "6" is pressed, the signal to be displayed is changed, and when the function keys of "7" to "9" are pressed, the sampling mode is changed. Make changes. When the “10” function key is pressed, the “waveform display” is terminated and the main menu is displayed (return to step S101 in FIG. 2).

As described above, by using the “waveform display”, it is possible to observe the time change of various signals.
This makes it possible to visually confirm the content of the weaving operation in which time change is a problem.

[0062]

According to the present invention, the signal level (specified value) that should be output when each part is functioning normally is displayed together with the actual measurement value. Can be done easily and quickly. Further, since the welding control unit and the head unit can be inspected separately from the inspection of the remote control unit (first operation unit), it is easy to identify the faulty portion.

Further, the measured value is displayed together with the specified value, and when the values match, a message indicating that the welding control section or the head section is functioning normally is displayed. Then, it is possible to obtain a welding machine inspection device capable of grasping the inspection result without performing the comparison work of the numerical information.

When the type of the instruction signal supplied to the welding control unit is determined (the inspection content is determined) based on the welding information held by the welding control unit, for example, the optimum Adjustable welding current, welding voltage, welding speed, weaving width, weaving speed, etc.
It can be done under the most frequently used conditions.

Further, the contents of the operation to be performed on the remote control unit are displayed, and the remote control unit normally functions based on the level of the instruction signal output by the remote control unit according to the operation according to the operation content. If it is configured to display whether the determination result is displayed or not and the determination result is displayed, the remote control unit can be inspected interactively. However, reliable inspection and adjustment can be performed quickly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a welding machine inspection apparatus according to the present invention and a connection form with a welding machine to be inspected.

FIG. 2 is a flow chart showing an overall operation procedure of the welding machine inspection apparatus according to the present invention.

FIG. 3 is an explanatory diagram showing a main menu displayed during operation of the welding machine inspection apparatus according to the present invention.

FIG. 4 is a flowchart showing an operation procedure of a “shipment test” in the welding machine inspection device according to the present invention.

FIG. 5 is a flowchart showing an operation procedure of a “remote control unit test” in the welding machine inspection device according to the present invention.

FIG. 6 is an explanatory diagram showing a remote control unit test menu displayed at the time of “remote control unit test” in the welding machine inspection apparatus according to the present invention.

FIG. 7 is a flowchart showing an operation procedure of a “head / body test” in the welding machine inspection device according to the present invention.

FIG. 8 is an explanatory diagram showing an outline of a data table displayed at the start of a “head / body test” in the welding machine inspection apparatus according to the present invention.

FIG. 9 is an explanatory diagram showing an outline of a data table displayed during execution of a “head / body test” in the welding machine inspection apparatus according to the present invention.

FIG. 10 is an explanatory diagram showing contents displayed on the screen when the “maintenance monitor” is executed in the welding machine inspection device according to the present invention.

FIG. 11 is a flowchart showing an operation procedure of “adjustment” in the welding machine inspection device according to the present invention.

FIG. 12 is an explanatory diagram schematically showing the contents displayed on the screen when the “welding voltage / current designated voltage adjustment” is executed in the welding machine inspection device according to the present invention.

FIG. 13 shows a welding machine inspection apparatus according to the present invention,
It is explanatory drawing which showed typically the content displayed on a screen at the time of performing "TG adjustment."

FIG. 14 is an explanatory diagram showing an example of contents displayed on the screen when the “waveform display” is executed in the welding machine inspection device according to the present invention.

FIG. 15 is a block diagram showing a configuration of a welding machine.

[Explanation of symbols]

 11 data input / output circuit 12 computer 13 printer 21 CPU 22 ROM 23 RAM 24 storage device 25 display device 26 keyboard 27, 28 interface 29 bus 41 remote control unit 42 head unit 43 welding control unit 51 control signal generation unit 52 welding power source

Claims (4)

[Claims] 1. A first operation section that outputs an instruction signal of a type according to an operation content by an operator, a welding control section that generates a control signal according to an instruction signal from the first operation section, and the welding. Welder inspection device for inspecting a welder configured to execute a welding operation according to a control signal generated by a control unit and output a status signal according to the operation state to the welding control unit And a display section for displaying the inspection result of the welding machine, a second operation section for outputting a predetermined instruction signal for operating the welding control section, and an output by the second operation section. An input / output unit that inputs the predetermined instruction signal to the welding control unit and outputs a control signal or a status signal exchanged between the welding control unit and the head unit; and the predetermined operation by the second operation unit. Instructions The level of the control signal from the welding control section or the status signal from the head section output from the input / output section is measured by the output of the signal, and the level of the measured signal is obtained for the predetermined instruction signal. A welding machine inspection apparatus, comprising: a display control unit for displaying on the display unit together with a prescribed level that is prescribed in advance as a level of a power signal. 2. The display control unit displays a message indicating that the welding control unit or the head unit is functioning normally when the level of the measured signal matches the specified level. The welding machine inspection device according to claim 1, wherein the welding machine inspection device is displayed on a section. 3. The second operation section determines the type of a predetermined instruction signal to be output based on welding information held by the welding control section and defining welding operation contents. Alternatively, the welding machine inspection device according to claim 2. 4. An instruction unit for instructing an operator of operation content to be performed on the first operation unit, wherein the display control unit is operated by an operation according to the operation content instructed by the instruction unit. The level of the instruction signal output by the first operation unit is measured, and the level of the measured signal is specified in advance as the level of the instruction signal to be output by the first operation unit with respect to the operation content. 4. A message indicating that the first operation unit is functioning normally is displayed on the display unit when the levels are compared with each other as compared with a specified level. The welding machine inspection device according to any one of the above.